M. Kh. Khatkova1 , E. A. Kapitonova2 , R. A. Ulimbasheva3, N. V. Konik4 , L. V. Umarova5
1 Maykop State Technological University, Maykop, Russia
2 Moscow State Academy of Veterinary Medicine and Biotechnology – MVA named after K. I. Skryabin, Moscow, Russia
3 Kabardino-Balkarian State Agrarian University named after V. M. Kokov, Nalchik, Russia
4 Saratov State University of Genetics, Biotechnology and Engineering named after N. I. Vavilov, Saratov, Russia
5 Kabardino-Balkarian State University named after H.M. Berbekov, Nalchik, Russia
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Volume 25 No. 11
Date of paper submission: 24.04.2025, date of review: 18.06.2025, date of acceptance: 15.07.2025.
Published: 11/30/2025
Abstract. The purpose of the study was to establish milk productivity of first-calf heifers with different feeding methods under stall-and-pasture and non-run-stall housing systems. Methods. The object of the study was Holsteinized black-and-white cattle in the first lactation. Taking into account the age, physiological condition and live weight, 2 groups of first-calf heifers were formed, 20 heads in each: the control group – animals of the stalland-run housing system, the experimental group – peers of the stall-and-pasture system. Throughout the lactation, the first-calf heifers of the control group were kept in a cowshed on a dairy farm with the provision of exercise on walking areas, and the difference in the maintenance of peers of the experimental group was that during the 5-8 months of lactation they were kept on pastures of the farm. Results. It was found that the maximum fertilization took place after the first insemination (55–60), when the majority was fertilized, with an advantage of individuals from the experimental group. A similar trend for the analyzed parameter was established for fertilization after the secondary insemination. Fruitful insemination of first-calf heifers in the experimental group required 1.58 doses of semen, which is 0.15 doses less than that of peers in the control group (P > 0.95). In general, the intercalving period of the experimental herd, calculated based on the duration of the service period and pregnancy, averaged 364–377 days and characterizes high potential for reproduction of the dairy herd. A higher level of milk production was established for first-calf heifers in the experimental group, which milked 6177 kg of milk per lactation, which is 345 kg (P > 0.95) more than that of peers in the control group. The result of economic calculations was a higher level of profitability of milk production by first-calf heifers in the experimental group (by 7 abs. %).
Keywords: reproductive capacity, productivity, feed payment, milk, first-calf heifers, feed feeding, housing system
For citation: Khatkova M. Kh., Kapitonova E. A., Ulimbasheva R. A., Konik N. V., Umarova L. V. Productivity and reproductive capacity of first-calf heifers under different feeding methods and housing systems. Agrarian Bulletin of the Urals. 2025; 25 (11): 1931‒1942. https://doi.org/10.32417/1997-4868-2025-25-11-1931-1942 (In Russ.)
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